test_that("The grid can be controlled", {
  expect_doppelganger('Setting ncol: p1 + p2 + p3 + p4 + plot_layout(ncol = 3)', {
    p1 + p2 + p3 + p4 + plot_layout(ncol = 3)
  })

  expect_doppelganger('Setting nrow: p1 + p2 + p3 + p4 + plot_layout(nrow = 3)', {
    p1 + p2 + p3 + p4 + plot_layout(nrow = 3)
  })

  expect_doppelganger('Setting widths: p1 + p2 + p3 + p4 + plot_layout(widths = c(1, 2))', {
    p1 + p2 + p3 + p4 + plot_layout(widths = c(1, 2))
  })

  expect_doppelganger('Setting heights: p1 + p2 + p3 + p4 + plot_layout(heights = c(1, 2))', {
    p1 + p2 + p3 + p4 + plot_layout(heights = c(1, 2))
  })

  expect_doppelganger('Setting widths as units: p1 + p2 + p3 + p4 + plot_layout(widths = unit(3, "cm"))', {
    p1 + p2 + p3 + p4 + plot_layout(widths = grid::unit(3, "cm"))
  })

  expect_doppelganger('Setting heights as units: p1 + p2 + p3 + p4 + plot_layout(heights = unit(3, "cm"))', {
    p1 + p2 + p3 + p4 + plot_layout(heights = grid::unit(3, "cm"))
  })
})

test_that("Fixed aspect plots behave", {
  p_f <- ggplot(mtcars) +
    geom_point(aes(hp, disp)) +
    coord_fixed() +
    ggtitle('Fixed Aspect')

  expect_doppelganger('FAR optimise space by default: p1 + p_f + p3 + p4', {
    p1 + p_f + p3 + p4
  })
  expect_doppelganger('FAR optimise space by default: p1 + p_f + p_f + p4', {
    p1 + p_f + p_f + p4
  })
  expect_doppelganger('FAR optimise space by default: p_f + p_f + p3 + p4', {
    p_f + p_f + p3 + p4
  })
  expect_doppelganger('FAR space optimisation can be turned off: p1 + p2 + p_f + p4 + plot_layout(widths = 1)', {
    p1 + p2 + p_f + p4 + plot_layout(widths = 1)
  })
  expect_doppelganger('FAR dimensions can be set with units:...', {
    p1 + p2 + p_f + plot_layout(widths = unit(c(1, 3, -1), c('null', 'cm', 'null')))
  })

  p_l1 <- ggplot(mtcars, aes(cyl, qsec, color=as.factor(vs))) +
    geom_point()
  p_l2 <- p_l1 + labs(color="a very looooooong legend title")
  expect_doppelganger('FAR legend justification', {
    p_l1 + p_l2 + plot_layout(ncol=1) & theme(legend.justification = "left", aspect.ratio=1)
  })
})
